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Effects of Mn and Cu on the Mechanical Properties of a High Strength Low Alloy NiCrMoV Steel 被引量:3

Effects of Mn and Cu on the Mechanical Properties of a High Strength Low Alloy NiCrMoV Steel
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摘要 The present study focuses on the effects of Mn and Cu on the mechanical properties, in particular, strength and toughness of a low alloy steel containing Ni, Cr, Mo and V. Specimens with different amounts of Mn (0.23%-0.85%)and Cu (0.15%-0.45%) were cast and forged, and then austenitized at 870℃ for 1h, followed by oil quenching. All specimens were tempered at 650℃ for 1h. The results show that as the amounts of Mn and Cu increase respectively from 0.35% to 0.85% and from 0.15% to 0.45%, the yield and tensile strength increase. The highest impact energies were observed in the specimen with 0.35% Mn and in the specimen with 0.25% Cu. The impact energy decreases with increasing the Mn and Cu from 0.35% to 0.85% and from 0.25% to 0.45%, respectively. Furthermore, the variation of Mn and Cu does not cause a considerable change in the tempered martensite microstructure. The optimum strength and toughness is observed in 0.35% Mn containing steel and in the 0.25% Cu containing steel. The present study focuses on the effects of Mn and Cu on the mechanical properties, in particular, strength and toughness of a low alloy steel containing Ni, Cr, Mo and V. Specimens with different amounts of Mn (0.23%-0.85%)and Cu (0.15%-0.45%) were cast and forged, and then austenitized at 870℃ for 1h, followed by oil quenching. All specimens were tempered at 650℃ for 1h. The results show that as the amounts of Mn and Cu increase respectively from 0.35% to 0.85% and from 0.15% to 0.45%, the yield and tensile strength increase. The highest impact energies were observed in the specimen with 0.35% Mn and in the specimen with 0.25% Cu. The impact energy decreases with increasing the Mn and Cu from 0.35% to 0.85% and from 0.25% to 0.45%, respectively. Furthermore, the variation of Mn and Cu does not cause a considerable change in the tempered martensite microstructure. The optimum strength and toughness is observed in 0.35% Mn containing steel and in the 0.25% Cu containing steel.
出处 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2005年第4期470-474,共5页 材料科学技术(英文版)
关键词 NiCrMoV steel CU MN Tensile strength Impact energy NiCrMoV steel Cu Mn Tensile strength Impact energy
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参考文献9

  • 1DIN 1.6959, Standard Specification for NiCrMoV Steels,Werkstoff-Leistungsblatt, Koln, April, 1979.
  • 2G.Malakondian: Mater. Sci., 1997, 42, 209.
  • 3W.M.Garrison: Metall. Trans., 1990, 42A, 20.
  • 4www. Ferroalloy & Alloying Additives Online Handbook.com.
  • 5N.Bandyopadhyay and C.J.Momahon: Metall. Trans.,1983, 14A, 1313.
  • 6R.L.Bodnar and T.Ohhashi: Metall. Trans., 1989, 20A,2197.
  • 7A.Khalid: Scr. Mater., 2001, 36, 797.
  • 8ASM Metals Handbook, ASM International, 10 edn., Metals Park ASM International, ohio, 1990, 1, 395.
  • 9Y.Tomita: Mater. Sci., 1990, 25, 950.

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